add Qt viewport

src/Vtk/vtkQViewport.cpp

@@ -0,0 +1,150 @@
+#include "vtkQViewport.h"
+
+#include <QVBoxLayout>
+
+#include <vtkAxesActor.h>
+#include <vtkCamera.h>
+#include <vtkCameraOrientationWidget.h>
+#include <vtkInteractorStyleTrackballCamera.h>
+#include <vtkObjectFactory.h>
+#include <vtkRenderWindowInteractor.h>
+#include <vtkTextProperty.h>
+
+namespace uLib {
+namespace Vtk {
+
+QViewport::QViewport(QWidget* parent)
+    : QWidget(parent)
+    , m_VtkWidget(nullptr)
+    , m_Renderer(vtkRenderer::New())
+    , m_Annotation(vtkCornerAnnotation::New())
+    , m_Marker(vtkOrientationMarkerWidget::New())
+    , m_CameraWidget(nullptr)
+{
+    // Build the layout – zero margins so VTK fills the entire widget
+    auto* layout = new QVBoxLayout(this);
+    layout->setContentsMargins(0, 0, 0, 0);
+    layout->setSpacing(0);
+
+    m_VtkWidget = new QVTKOpenGLNativeWidget(this);
+    layout->addWidget(m_VtkWidget);
+
+    // After the Qt widget exists but before the first paint,
+    // attach the renderer and configure the pipeline.
+    SetupPipeline();
+}
+
+QViewport::~QViewport()
+{
+    m_Renderer->RemoveAllViewProps();
+    m_Renderer->Clear();
+
+    m_Annotation->Delete();
+    m_Marker->Delete();
+    if (m_CameraWidget)
+        m_CameraWidget->Delete();
+    m_Renderer->Delete();
+}
+
+void QViewport::SetupPipeline()
+{
+    // Add our renderer to the QVTKOpenGLNativeWidget's render window
+    vtkRenderWindow* rw = m_VtkWidget->renderWindow();
+    rw->AddRenderer(m_Renderer);
+
+    // Qt will supply its own interactor – grab it
+    vtkRenderWindowInteractor* iren = rw->GetInteractor();
+
+    // Trackball-camera interaction style
+    vtkNew<vtkInteractorStyleTrackballCamera> style;
+    iren->SetInteractorStyle(style);
+
+    // Corner annotation
+    m_Annotation->GetTextProperty()->SetColor(1, 1, 1);
+    m_Annotation->GetTextProperty()->SetFontFamilyToArial();
+    m_Annotation->GetTextProperty()->SetOpacity(0.5);
+    m_Annotation->SetMaximumFontSize(10);
+    m_Annotation->SetText(0, "uLib VTK Viewer - OpenCMT all right reserved.");
+    m_Renderer->AddViewProp(m_Annotation);
+
+    // Orientation axes marker (bottom-left corner)
+    vtkNew<vtkAxesActor> axes;
+    m_Marker->SetInteractor(iren);
+    m_Marker->SetOrientationMarker(axes);
+    m_Marker->SetViewport(0.0, 0.0, 0.2, 0.2);
+    m_Marker->SetEnabled(true);
+    m_Marker->InteractiveOff();
+
+    // Camera-orientation widget (VTK ≥ 9)
+#if VTK_MAJOR_VERSION >= 9
+    m_CameraWidget = vtkCameraOrientationWidget::New();
+    m_CameraWidget->SetParentRenderer(m_Renderer);
+    m_CameraWidget->SetInteractor(iren);
+    m_CameraWidget->On();
+#endif
+
+    m_Renderer->SetBackground(0.15, 0.15, 0.15);
+    m_Renderer->ResetCamera();
+}
+
+// ── Public API ────────────────────────────────────────────────────────────────
+
+void QViewport::Render()
+{
+    m_VtkWidget->renderWindow()->Render();
+}
+
+void QViewport::Reset()
+{
+    ZoomAuto();
+    Render();
+}
+
+void QViewport::ZoomAuto()
+{
+    m_Renderer->ResetCameraClippingRange();
+    m_Renderer->ResetCamera();
+}
+
+void QViewport::AddPuppet(Puppet& prop)
+{
+    prop.ConnectRenderer(m_Renderer);
+    prop.ConnectInteractor(GetInteractor());
+    Render();
+}
+
+void QViewport::RemovePuppet(Puppet& prop)
+{
+    prop.DisconnectRenderer(m_Renderer);
+    Render();
+}
+
+void QViewport::addProp(vtkProp* prop)
+{
+    m_Renderer->AddActor(prop);
+    Render();
+}
+
+void QViewport::RemoveProp(vtkProp* prop)
+{
+    m_Renderer->RemoveViewProp(prop);
+    Render();
+}
+
+void QViewport::AddWidget(vtk3DWidget* /*widget*/)
+{
+    // vtk3DWidget integration can be added here if needed
+}
+
+vtkRenderWindow* QViewport::GetRenderWindow()
+{
+    return m_VtkWidget->renderWindow();
+}
+
+vtkRenderWindowInteractor* QViewport::GetInteractor()
+{
+    return m_VtkWidget->renderWindow()->GetInteractor();
+}
+
+} // namespace Vtk
+} // namespace uLib